Typical Dry Well Size

Decide what size storm you would like to store and infiltrate in your dry well.

Typical dry well size.

The components of a typical dry well are shown above in figure 9 3 1. A dry well is an excellent way to divert water runoff from your roof away from your home and yard. The dry well must be at least 10 feet from your house and any other buildings that are level with yours. Skilled homeowners may also be able to complete this project on their own for material costs and one day of labor.

If no soil permeability data is available assume a conservative value of 0 5 inches hr. A do it yourself dry well to process rain water can be created for 5 50 depending on the size and materials used. The dry well is essentially a box filled with gravel and you need to find the height length and width of the box to store the runoff. Essentially a dry well takes the water coming off of your home when it rains and drains it away from your home to a tank and gravel pit that is designed to handle large amounts of water.

This may either be the groundwater recharge or stormwater quality design storm depending upon. Figure 3 shows a sketch of a typical single family. Depending on the average amount of storm water you need to control you can choose install a dry well that s as small as a couple feet in depth and diameter or as large as several feet wide and. Should be used in the calculations to size the dry well.

The average cost to construct a dry well is 2 559 and most homeowners pay between 1 505 and 4 064 to complete the project. Find the closest number in column a. Refer to the sizing chart. The typical dry well installation cost includes materials such as a prefabricated dry well made from.

Storage volume depth and duration a dry well must be designed to treat the total runoff volume generated by the dry well s maximum design storm.